Undeniable signatures.

Each entry is cryptographically signed and hashed into an append-only ledger. Nothing can be altered after the fact - tamper-evident by design, exactly what an auditor demands.

For PROs + producers

The field app is free forever for the people doing the collecting.

Record signed at capture

Hash chained to ledger

Trail verified end to end

Verify trail

How it works

Three steps. Zero effort.

Sign at capture

The record is signed on the device the moment it is captured - location, time, photo and weight sealed together.

Chain the hash

Each record hash links to the previous one in an append-only ledger. Changing history breaks the chain visibly.

Hand the auditor proof

Any record - or the whole quarter - verifies in one pass. Tampering is not hidden; it is mathematically loud.

Why it matters

What this buys you.

No back-office edits

Numbers cannot be quietly massaged after the field logged them.

Disputes end fast

A verified chain beats a shouting match over whose spreadsheet is right.

Regulator-grade

Append-only, signed, verifiable - the standard auditors already trust.

Common questions

Straight answers.

What does tamper-evident mean in practice?

Every record is hashed and chained to the one before it. If any historical record is altered, every later hash stops matching - the tampering is immediately visible.

Who holds the signing keys?

Signatures happen on-device at capture; the ledger accepts only correctly signed records. No one - including EPRlog - can rewrite history silently.

Can the auditor verify independently?

Yes. The exported report carries the hashes needed to re-verify the chain for every record it references.

Own the proof.

Put evidence nobody can argue with behind every kilo you touch.